diff --git a/agent/modals/quote/quote_add.php b/agent/modals/quote/quote_add.php
index ad3f0d3a..3d47bbe7 100644
--- a/agent/modals/quote/quote_add.php
+++ b/agent/modals/quote/quote_add.php
@@ -14,6 +14,7 @@ ob_start();
     </button>
 </div>
 <form action="post.php" method="post" autocomplete="off">
+    <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
 
     <div class="modal-body">
 
diff --git a/agent/modals/quote/quote_copy.php b/agent/modals/quote/quote_copy.php
index 2fe90eac..32c07458 100644
--- a/agent/modals/quote/quote_copy.php
+++ b/agent/modals/quote/quote_copy.php
@@ -23,6 +23,7 @@ ob_start();
     </button>
 </div>
 <form action="post.php" method="post" autocomplete="off">
+    <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
     <input type="hidden" name="quote_id" value="<?php echo $quote_id; ?>">
     <div class="modal-body">
         <?php if (isset($_GET['client_id'])) { ?>
diff --git a/agent/modals/quote/quote_edit.php b/agent/modals/quote/quote_edit.php
index d6523d60..ed3aec99 100644
--- a/agent/modals/quote/quote_edit.php
+++ b/agent/modals/quote/quote_edit.php
@@ -29,6 +29,7 @@ ob_start();
     </button>
 </div>
 <form action="post.php" method="post" autocomplete="off">
+    <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
     <input type="hidden" name="quote_id" value="<?php echo $quote_id; ?>">
 
     <div class="modal-body">
diff --git a/agent/modals/quote/quote_export.php b/agent/modals/quote/quote_export.php
index 5a598c15..daec4dc0 100644
--- a/agent/modals/quote/quote_export.php
+++ b/agent/modals/quote/quote_export.php
@@ -15,6 +15,7 @@ ob_start();
     </button>
 </div>
 <form action="post.php" method="post" autocomplete="off">
+    <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
     <input type="hidden" name="client_id" value="<?= $client_id ?>">
 
     <div class="modal-body">
diff --git a/agent/modals/quote/quote_note.php b/agent/modals/quote/quote_note.php
index 26bdd8cd..817a8017 100644
--- a/agent/modals/quote/quote_note.php
+++ b/agent/modals/quote/quote_note.php
@@ -10,6 +10,7 @@
                 </button>
             </div>
             <form action="post.php" method="post" autocomplete="off">
+                <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
                 <input type="hidden" name="quote_id" value="<?php echo $quote_id; ?>">
                 <div class="modal-body">
                     <div class="form-group">
diff --git a/agent/modals/quote/quote_to_invoice.php b/agent/modals/quote/quote_to_invoice.php
index af3b03eb..8f70f8a0 100644
--- a/agent/modals/quote/quote_to_invoice.php
+++ b/agent/modals/quote/quote_to_invoice.php
@@ -24,6 +24,7 @@ ob_start();
     </button>
 </div>
 <form action="post.php" method="post" autocomplete="off">
+    <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
     <input type="hidden" name="quote_id" value="<?= $quote_id ?>">
 
     <div class="modal-body">
diff --git a/agent/post/quote.php b/agent/post/quote.php
index 6a650d60..0e8fd105 100644
--- a/agent/post/quote.php
+++ b/agent/post/quote.php
@@ -8,6 +8,8 @@ defined('FROM_POST_HANDLER') || die("Direct file access is not allowed");
 
 if (isset($_POST['add_quote'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     require_once 'quote_model.php';
@@ -46,6 +48,8 @@ if (isset($_POST['add_quote'])) {
 
 if (isset($_POST['add_quote_copy'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_POST['quote_id']);
@@ -114,6 +118,8 @@ if (isset($_POST['add_quote_copy'])) {
 
 if (isset($_POST['add_quote_to_invoice'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_POST['quote_id']);
@@ -187,6 +193,8 @@ if (isset($_POST['add_quote_to_invoice'])) {
 
 if (isset($_POST['add_quote_item'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_POST['quote_id']);
@@ -241,6 +249,8 @@ if (isset($_POST['add_quote_item'])) {
 
 if (isset($_POST['quote_note'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_POST['quote_id']);
@@ -265,6 +275,8 @@ if (isset($_POST['quote_note'])) {
 
 if (isset($_POST['edit_quote'])) {
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     require_once 'quote_model.php';
@@ -299,6 +311,8 @@ if (isset($_POST['edit_quote'])) {
 
 if (isset($_GET['delete_quote'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 3);
 
     $quote_id = intval($_GET['delete_quote']);
@@ -341,6 +355,8 @@ if (isset($_GET['delete_quote'])) {
 
 if (isset($_GET['delete_quote_item'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $item_id = intval($_GET['delete_quote_item']);
@@ -375,6 +391,8 @@ if (isset($_GET['delete_quote_item'])) {
 
 if (isset($_GET['mark_quote_sent'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_GET['mark_quote_sent']);
@@ -399,6 +417,8 @@ if (isset($_GET['mark_quote_sent'])) {
 
 if (isset($_GET['accept_quote'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_GET['accept_quote']);
@@ -425,6 +445,8 @@ if (isset($_GET['accept_quote'])) {
 
 if (isset($_GET['decline_quote'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_GET['decline_quote']);
@@ -451,6 +473,8 @@ if (isset($_GET['decline_quote'])) {
 
 if (isset($_GET['email_quote'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_GET['email_quote']);
@@ -529,6 +553,8 @@ if (isset($_GET['email_quote'])) {
 
 if (isset($_GET['mark_quote_invoiced'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
     enforceUserPermission('module_sales', 2);
 
     $quote_id = intval($_GET['mark_quote_invoiced']);
@@ -553,6 +579,8 @@ if (isset($_GET['mark_quote_invoiced'])) {
 
 if(isset($_POST['export_quotes_csv'])){
 
+    validateCSRFToken($_POST['csrf_token']);
+
     enforceUserPermission('module_sales');
 
     if ($_POST['client_id']) {
@@ -611,6 +639,10 @@ if(isset($_POST['export_quotes_csv'])){
 
 if (isset($_GET['export_quote_pdf'])) {
 
+    validateCSRFToken($_GET['csrf_token']);
+
+    enforceUserPermission('module_sales');
+
     $quote_id = intval($_GET['export_quote_pdf']);
 
     $sql = mysqli_query(
diff --git a/agent/quote.php b/agent/quote.php
index a847336e..0d0476ee 100644
--- a/agent/quote.php
+++ b/agent/quote.php
@@ -150,22 +150,22 @@ if (isset($_GET['quote_id'])) {
                     </button>
                     <div class="dropdown-menu">
                         <?php if (!empty($config_smtp_host) && !empty($contact_email)) { ?>
-                            <a class="dropdown-item" href="post.php?email_quote=<?php echo $quote_id; ?>">
+                            <a class="dropdown-item" href="post.php?email_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                 <i class="fas fa-fw fa-paper-plane mr-2"></i>Send Email
                             </a>
                             <div class="dropdown-divider"></div>
                         <?php } ?>
-                        <a class="dropdown-item" href="post.php?mark_quote_sent=<?php echo $quote_id; ?>">
+                        <a class="dropdown-item" href="post.php?mark_quote_sent=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                             <i class="fas fa-fw fa-check mr-2"></i>Mark Sent
                         </a>
                     </div>
                 <?php } ?>
 
                 <?php if ($quote_status == 'Sent' || $quote_status == 'Viewed') { ?>
-                    <a class="btn btn-primary confirm-link" href="post.php?accept_quote=<?php echo $quote_id; ?>">
+                    <a class="btn btn-primary confirm-link" href="post.php?accept_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                         <i class="fas fa-thumbs-up mr-2"></i>Accept
                     </a>
-                    <a class="btn btn-default confirm-link" href="post.php?decline_quote=<?php echo $quote_id; ?>">
+                    <a class="btn btn-default confirm-link" href="post.php?decline_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                         <i class="fas fa-thumbs-down mr-2"></i>Decline
                     </a>
                 <?php } ?>
@@ -180,7 +180,7 @@ if (isset($_GET['quote_id'])) {
                             <span class="sr-only">Toggle Dropdown</span>
                         </button>
                         <div class="dropdown-menu dropdown-menu-right">
-                            <a class="dropdown-item" href="post.php?mark_quote_invoiced=<?php echo $quote_id; ?>">
+                            <a class="dropdown-item" href="post.php?mark_quote_invoiced=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                 <i class="fas fa-fw fa-check mr-2"></i>Mark Invoiced
                             </a>
                         </div>
@@ -209,11 +209,11 @@ if (isset($_GET['quote_id'])) {
                             <a class="dropdown-item" href="#" onclick="window.print();">
                                 <i class="fa fa-fw fa-print text-secondary mr-2"></i>Print
                             </a>
-                            <a class="dropdown-item" href="post.php?export_quote_pdf=<?php echo $quote_id; ?>" target="_blank">
+                            <a class="dropdown-item" href="post.php?export_quote_pdf=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>" target="_blank">
                                 <i class="fa fa-fw fa-download text-secondary mr-2"></i>Download PDF
                             </a>
                             <?php if (!empty($config_smtp_host) && !empty($contact_email)) { ?>
-                                <a class="dropdown-item" href="post.php?email_quote=<?php echo $quote_id; ?>">
+                                <a class="dropdown-item" href="post.php?email_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                     <i class="fa fa-fw fa-paper-plane text-secondary mr-2"></i>Send Email
                                 </a>
                             <?php } ?>
@@ -222,7 +222,7 @@ if (isset($_GET['quote_id'])) {
                             </a>
                             <?php if (lookupUserPermission("module_sales") >= 3) { ?>
                                 <div class="dropdown-divider"></div>
-                                <a class="dropdown-item text-danger text-bold confirm-link" href="post.php?delete_quote=<?php echo $quote_id; ?>">
+                                <a class="dropdown-item text-danger text-bold confirm-link" href="post.php?delete_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                     <i class="fa fa-fw fa-times mr-2"></i>Delete
                                 </a>
                             <?php } ?>
@@ -341,7 +341,7 @@ if (isset($_GET['quote_id'])) {
                                                                     <i class="fa fa-fw fa-edit mr-2"></i>Edit
                                                                 </a>
                                                                 <div class="dropdown-divider"></div>
-                                                                <a class="dropdown-item text-danger confirm-link" href="post.php?delete_quote_item=<?php echo $item_id; ?>">
+                                                                <a class="dropdown-item text-danger confirm-link" href="post.php?delete_quote_item=<?= $item_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                                                     <i class="fa fa-fw fa-trash mr-2"></i>Delete
                                                                 </a>
                                                             </div>
@@ -367,6 +367,7 @@ if (isset($_GET['quote_id'])) {
                                                                     echo "hidden";
                                                                 } ?>>
                                         <form action="post.php" method="post" autocomplete="off">
+                                            <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
                                             <input type="hidden" name="quote_id" value="<?php echo $quote_id; ?>">
                                             <input type="hidden" name="item_order" value="<?php
                                             //find largest order number and add 1
diff --git a/agent/quotes.php b/agent/quotes.php
index 6f8da894..f60658c3 100644
--- a/agent/quotes.php
+++ b/agent/quotes.php
@@ -224,13 +224,13 @@ $num_rows = mysqli_fetch_row(mysqli_query($mysqli, "SELECT FOUND_ROWS()"));
                                         </a>
                                         <?php if (!empty($config_smtp_host)) { ?>
                                             <div class="dropdown-divider"></div>
-                                            <a class="dropdown-item" href="post.php?email_quote=<?php echo $quote_id; ?>">
+                                            <a class="dropdown-item" href="post.php?email_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                                 <i class="fas fa-fw fa-paper-plane mr-2"></i>Email
                                             </a>
                                         <?php } ?>
                                         <?php if (lookupUserPermission("module_sales") >= 3) { ?>
                                             <div class="dropdown-divider"></div>
-                                            <a class="dropdown-item text-danger text-bold confirm-link" href="post.php?delete_quote=<?php echo $quote_id; ?>">
+                                            <a class="dropdown-item text-danger text-bold confirm-link" href="post.php?delete_quote=<?= $quote_id ?>&csrf_token=<?= $_SESSION['csrf_token'] ?>">
                                                 <i class="fas fa-fw fa-trash mr-2"></i>Delete
                                             </a>
                                         <?php } ?>